@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&family=Roboto:wght@400;700&display=swap');:root{--primary-color:#4A90E2;--secondary-color:#9013FE;--accent-color:#F5A623;--background-color:#f5f5f5;--text-color:#333333;--white:#fff;--gray:#e0e0e0}body{font-family:'Roboto',sans-serif;color:var(--text-color);background-color:var(--background-color);margin:0;padding:0;line-height:1.6}.design-notice{background:linear-gradient(45deg,var(--primary-color),var(--secondary-color));color:var(--white);text-align:center;padding:15px;font-size:18px;font-weight:700;box-shadow:0 4px 12px rgba(0,0,0,0.1)}.navbar{position:fixed;top:0;width:100%;background-color:rgba(74,144,226,0.9);box-shadow:0 2px 4px rgba(0,0,0,0.1);z-index:1000}.navbar ul{display:flex;justify-content:center;list-style:none;padding:10px 0;margin:0}.navbar li{margin:0 15px}.navbar a{color:var(--white);text-decoration:none;font-weight:500;transition:color 0.3s ease}.navbar a:hover{color:var(--accent-color)}main{padding-top:80px;max-width:1200px;margin:0 auto}article{background:var(--white);border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,0.08);padding:40px;margin:20px}article h2{font-family:'Montserrat',sans-serif;font-size:28px;color:var(--primary-color);margin-top:40px;position:relative;padding-bottom:10px}article h2:after{content:'';position:absolute;bottom:0;left:0;width:60px;height:3px;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color))}article h3{font-family:'Montserrat',sans-serif;font-size:22px;color:var(--secondary-color);margin-top:30px}article p{font-size:17px;margin:20px 0}pre{background:#2d2d2d;color:#f8f8f2;padding:20px;border-radius:8px;overflow-x:auto;margin:25px 0;box-shadow:inset 0 0 10px rgba(0,0,0,0.3)}code{font-family:'Courier New',monospace;font-size:15px}.gradient-button{background:linear-gradient(45deg,var(--primary-color),var(--secondary-color));border:none;color:var(--white);padding:15px 30px;text-align:center;text-decoration:none;display:inline-block;font-size:16px;border-radius:25px;transition:background 0.3s ease;margin:15px 0}.gradient-button:hover{background:linear-gradient(45deg,var(--secondary-color),var(--primary-color))}.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px;margin:40px 0}.image-container{position:relative;border-radius:12px;overflow:hidden;box-shadow:0 8px 16px rgba(0,0,0,0.1);transition:transform 0.3s ease}.image-container:hover{transform:translateY(-5px)}.image-container img{width:100%;height:auto;display:block;transition:transform 0.5s ease}.image-container:hover img{transform:scale(1.05)}table{width:100%;border-collapse:collapse;margin:30px 0;box-shadow:0 2px 10px rgba(0,0,0,0.05)}th{background:linear-gradient(45deg,var(--primary-color),var(--secondary-color));color:var(--white);padding:12px;text-align:left}td{padding:12px;border-bottom:1px solid var(--gray)}tr:nth-child(even){background-color:rgba(74,144,226,0.05)}.footer{background-color:#333;color:var(--white);padding:30px;text-align:center;margin-top:50px}.language-switcher{display:inline-block;margin-top:15px}.language-switcher select{padding:8px 15px;border-radius:5px;border:none;background-color:var(--secondary-color);color:var(--white);font-size:14px;cursor:pointer;transition:background-color 0.3s ease}.language-switcher select:hover{background-color:var(--primary-color)}@media(max-width:768px){.navbar ul{flex-direction:column;align-items:center;padding:10px}.navbar li{margin:5px 0}article{padding:25px}article h2{font-size:24px}article h3{font-size:20px}}.fade-in{opacity:0;transform:translateY(20px);transition:opacity 0.6s ease-out,transform 0.6s ease-out}.fade-in.visible{opacity:1;transform:translateY(0)}